check your state's hunting laws. Look for the term "shining", and take it from there. I do know that even if it's legal you best not get caught shining a light on a deer or anything with hoofs and have a firearm on you. In many states a laser is still legal, and I think all of them allow a lighted scope. I have no trouble shooting coyotes at twilight, or when there's a little snow on the ground
gary